<template>
  <view class="cart-container"  v-if="cart.length !== 0">
   
    <my-address></my-address>
   <view class="cart-title">
     <!-- 左侧的图标 -->
     <uni-icons type="shop" size="18" color="blue"></uni-icons>
     <!-- 描述文本 -->
     <text class="cart-title-text">购物车</text>
   </view>

   <uni-swipe-action>
      <block v-for="(goods, i) in cart" :key="i">
     <uni-swipe-action-item :right-options="options" @click="swipeActionClickHandler(goods)">
       <my-goods :goods="goods" :show-radio="true"
       @radio-change="radioChangeHandler"
       :show-num="true"
       @num-change="numberChangeHandler"
       ></my-goods>
     </uni-swipe-action-item>
        </block>
   </uni-swipe-action>
   
   <my-settle></my-settle>
  </view>
   <!-- 空白购物车区域 -->
    <view class="empty-cart" v-else>
      <image src="../../static/cart_empty@2x.png" class="empty-img"></image>
      <text class="tip-text">空空如也~</text>
    </view>
  </view>
</template>

<script>
  import badgeMix from '../../minxins/tabbar-badge.js'
  import { mapState,mapMutations  } from 'vuex'

  export default {
     mixins: [badgeMix],
     computed: {
         // 将 m_cart 模块中的 cart 数组映射到当前页面中使用
         ...mapState('m_cart', ['cart']),
       },
    data() {
      return {
        options: [{
              text: '删除', // 显示的文本内容
              style: {
                backgroundColor: '#C00000' // 按钮的背景颜色
              }
            }]
      };
    },
    methods: {
      ...mapMutations('m_cart',['updateGoodsState','updateGoodsCount','removeGoodsById']),
      // 商品的勾选状态发生了变化
      radioChangeHandler(e) {
        // console.log(e) // 输出得到的数据 -> {goods_id: 395, goods_state: false}
      this.updateGoodsState(e)
      },
      numberChangeHandler(e){
        this.updateGoodsCount(e)
      },
      // 点击了滑动操作按钮
      swipeActionClickHandler(goods) {
        this.removeGoodsById(goods.goods_id)
      }
    }

     
  }
</script>

<style lang="scss">
  .cart-container {
    padding-bottom: 50px;
  }
.cart-title {
  height: 40px;
  display: flex;
  align-items: center;
  font-size: 14px;
  padding-left: 5px;
  border-bottom: 1px solid #efefef;
  .cart-title-text {
    margin-left: 10px;
  }
}

.empty-cart {
  display: flex;
  flex-direction: column;
  align-items: center;
  padding-top: 150px;

  .empty-img {
    width: 90px;
    height: 90px;
  }

  .tip-text {
    font-size: 12px;
    color: gray;
    margin-top: 15px;
  }
}
</style>
